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This post is part of the artistic performance The Happening on Instagram.

Post #832:

Published on
šŸ§­ Oberursel
šŸŒ Oberursel, Hesse, Germany
Picture in Oberursel Picture in Oberursel Picture in Oberursel Picture in Oberursel

Chilean rose tarantula,
Grammostola rosea

Adult tarantulas molt every one to two years.
The last molt was two years ago.

1. Pumping
2. Molting
3. Hardening

The place is secured with spider webs. The spider lies on its back and pumps a molting hormone through its body. The upper shield bursts open and it frees itself from the old exoskeleton. After that, the spider is exhausted and not yet fully hardened.

The tarantula pumps a molting hormone (ecdysterone) from its rear end to its front end. This process takes several hours. I found it in this position at 3 p.m. At just after 8 p.m. it burst out of its upper shield. Since it is lying on its back, the upper shield is down. The video is at 200x speed.

After the tarantula has burst out of the upper shield, it moves out of the exoskeleton with rhythmic movements, carefully pulling out its legs. This lasted two hours from about 8 to 10 p.m. The process seems well thought out as its old shell falls off perfectly. The video is at 100x speed.

The tarantula lies on its back, peaceful as a baby. It is still very soft and therefore very sensitive. It stretches its limbs by increasing body pressure, actively moving the limbs and then hardening the new exoskeleton. The spider web is nice and soft and not only protects against injuries, but also against intruders such as hungry insects or harmful microorganisms.

After half an hour the tarantula has gotten up again, but is not yet completely hardened. It remains in this safe place for the next few days and recovers.

Species in this post: Chilean rose tarantula Grammostola rosea Human Homo sapiens
Topic: ➟ Spiders

This post is part of the artistic performance The Happening on Instagram.

Further information about this art project Related post on Instagram

Creator of this post is Frederic Hilpert

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